11020391 has 2 divisors, whose sum is σ = 11020392. Its totient is φ = 11020390.

The previous prime is 11020363. The next prime is 11020393. The reversal of 11020391 is 19302011.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11020391 - 2⁶ = 11020327 is a prime.

Together with 11020393, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11020393) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5510195 + 5510196.

It is an arithmetic number, because the mean of its divisors is an integer number (5510196).

Almost surely, 2^11020391 is an apocalyptic number.

11020391 is a deficient number, since it is larger than the sum of its proper divisors (1).

11020391 is an equidigital number, since it uses as much as digits as its factorization.

11020391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54, while the sum is 17.

The square root of 11020391 is about 3319.6974259712. The cubic root of 11020391 is about 222.5353459817.

It can be divided in two parts, 11020 and 391, that added together give a palindrome (11411).

The spelling of 11020391 in words is "eleven million, twenty thousand, three hundred ninety-one".